Titus213 wrote in post #4265755
The 580EX will not give you any inherent mechanism to fire you Sunpak wirelessly that you won't get with a 430EX. You will need to connect a triggering device to the Sunpak - optical, radio, or cable to camera. An EX flash would have to be in manual mode to trip an optical slave and to use it off-camera with a radio system.
The 580EX will not give you any inherent mechanism to fire you Sunpak wirelessly that you won't get with a 430EX. You will need to connect a triggering device to the Sunpak - optical, radio, or cable to camera. An EX flash would have to be in manual mode to trip an optical slave and to use it off-camera with a radio system.
OK, that makes more sense. Thank you. But why does it have to be manual mode to trigger an optical? Doesn't it just 'see' the light and trigger on that? Sorry for the silly questions. I'm just starting to learn about flash and although I've read a lot already, the gear still confuses me.
